Verbseoul.
regular
중얼거리다jungeolgeoridato mutter, to mumble

To say to mutter, to mumble politely in the present tense, use 중얼거려요 (choong-uhl-guh-ryuh-yoh). Below is the full conjugation of 중얼거리다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
중얼거려
choong-uhl-guh-ryuh
중얼거려요
choong-uhl-guh-ryuh-yoh
중얼거립니다
choong-uhl-guh-reem-nee-dah
Past
중얼거렸어
choong-uhl-guh-ryuh-ssuh
중얼거렸어요
choong-uhl-guh-ryuh-ssuh-yoh
중얼거렸습니다
choong-uhl-guh-ryuh-sseum-nee-dah
Future
중얼거릴 거야
choong-uhl-guh-reel- -guh-yah
중얼거릴 거예요
choong-uhl-guh-reel- -guh-yae-yoh
중얼거릴 겁니다
choong-uhl-guh-reel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
중얼거리세요
choong-uhl-guh-ree-sae-yoh
Suggestion / Let's Polite (요)
중얼거려요
choong-uhl-guh-ryuh-yoh
Question Polite (요)
중얼거려요?
choong-uhl-guh-ryuh-yoh-?
Connective “and” — (고)
중얼거리고
choong-uhl-guh-ree-goh
Conditional “if” — (면)
중얼거리면
choong-uhl-guh-ree-myuhn
Noun form — (기)
중얼거림
choong-uhl-guh-reem